ATV/UTV Piston and Ring Kits
ATV/UTV Piston & Ring Kits at JJ Motorsports
Rebuild your ATV/UTV engine with premium forged piston and ring kits from JJ Motorsports, featuring high-compression and big-bore options for massive power gains on Yamaha YFZ450, Honda TRX450R, Suzuki LTZ400, and more. These race-proven kits deliver superior durability and performance in off-road, trail, and dune conditions.
Shop Millennium, JE Pistons, and Wossner piston kits for championship-level quality. Explore related categories such as ATV/UTV engine for cylinders and gaskets, or ATV/UTV for cams and exhaust to complete your top-end rebuild and dominate the track or trail.
Top ATV/UTV Piston & Ring Kits
- Millennium Piston Kit K8897D500-2 – +5.00mm big-bore piston kit; forged for Yamaha YFZ450/R with rings, pin, and clips.
- JE Pistons Piston Kit 261546 – High-compression forged piston; includes rings and wrist pin for Honda TRX450R.
- Wossner Piston Kit 8094D050 – +0.50mm oversize piston kit; lightweight forged with moly coating for Suzuki LTZ400.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Wiseco Piston Kit with Gasket for Yamaha YFM660 Grizzly 2002-2008 PK1435
WISECO
$365.95A top-end rebuild demands precision components that can handle sustained high-RPM operation and temperature extremes. The Wiseco PK1435 piston kit delivers the complete package for Yamaha YFM660...09030625- SKU:
- 09030625
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 99.92 MM
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 84.00 MM
- TYPE:
- TOP END
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 9.9:1
- DISPLACEMENT:
- 660 CC
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- BORE SIZE METRIC:
- 100.00 MM
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- UTV
$365.95 -
Wiseco Piston Kit for Yamaha YFM660R Raptor 2001-2005 100.50mm PK1432
WISECO
$334.95A quality piston kit is the foundation of any reliable engine rebuild—and the Wiseco PK1432 delivers the precision engineering that separates a proper top-end refresh from a costly failure. Built...09030622- SKU:
- 09030622
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.9:1
- PISTON DIAMETER METRIC:
- 100.42 MM
- SKIRT COATING:
- ARMORGLIDE®
- BORE SIZE METRIC:
- 100.50 MM
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 84.00 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- +0,50 MM
- DISPLACEMENT:
- 660 CC
- TYPE:
- TOP END
- UNITS:
- KIT
$334.95Qty in Cart: 0Quantity:Price:$334.95Subtotal: -
VERTEX Piston Kit 23908B
VERTEX
$230.95A piston kit is the foundation of engine reliability and power delivery—especially under high RPM and boost conditions. The VERTEX 23908B delivers precision-engineered pistons with durability...09103382- SKU:
- 09103382
- Availability:
- Ships Same Business Day
- Weight:
- 0.89 LBS
$230.95 -
Wiseco Piston Kit with Gasket for Yamaha YFM660F Grizzly 4x4 2002-2008 PK1437
WISECO
$349.95If you're running a Yamaha YFM660F Grizzly and pushing hard on the track or trail, your stock pistons won't cut it. Wiseco's forged piston kit delivers the strength and thermal stability your engine...09030627- SKU:
- 09030627
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 101.00 MM
- TYPE:
- TOP END
- UNITS:
- KIT
- DISPLACEMENT:
- 660 CC
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 84.00 MM
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- UTV
- BORE - OVERSIZE:
- +1,00 MM
- COMPRESSION RATIO IMPERIAL:
- 9.9:1
- PISTON DIAMETER METRIC:
- 100.92 MM
- SKIRT COATING:
- ARMORGLIDE®
$349.95Qty in Cart: 0Quantity:Price:$349.95Subtotal: -
Wiseco Piston 2.00 mm Oversize Yamaha Banshee 350 1987-2006 795M06600
WISECO
$188.95When you're pushing your Banshee 350 to the limit, stock pistons become your weakness. The Wiseco 2.00 mm oversize piston delivers the strength and precision needed to handle increased boost, higher...795M06600- SKU:
- 795M06600
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- STROKE LENGTH METRIC:
- 54.00 MM
- BORE - OVERSIZE METRIC:
- +2.00 MM
- BORE - OVERSIZE:
- +2,00 MM
- BORE SIZE METRIC:
- 66.35 MM
- DISPLACEMENT:
- 370 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH:
- 54,00 MM
$188.95 -
Wiseco Piston Kit for Yamaha YFZ350 Banshee 1987-2006 65.25mm PK145
WISECO
$404.95A worn or damaged top-end severely limits your YFZ350's power delivery and reliability—this Wiseco kit restores full performance with factory-matched components engineered for 2-stroke demands...09030636- SKU:
- 09030636
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- BORE SIZE METRIC:
- 66.25 MM
- DISPLACEMENT:
- 361 CC
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 54.00 MM
- RIDING STYLE:
- ATV
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE:
- +1,25 MM
- BORE - OVERSIZE METRIC:
- +1.25 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON DIAMETER METRIC:
- 65.17 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- TYPE:
- TOP END
- UNITS:
- KIT
$404.95Qty in Cart: 0Quantity:Price:$404.95Subtotal: -
Wiseco Piston Kit Yamaha YFM125R Raptor 2011-2013 11:1 40068M05450
WISECO
$169.95The stock piston in your Yamaha YFM125R Raptor won't cut it if you're pushing harder on the trail or at the track. Wiseco's high-silicon alloy piston kit delivers the durability and compression ratio...09104156- SKU:
- 09104156
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- DISPLACEMENT:
- 126 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 54.50 MM
- BORE - OVERSIZE:
- +0,50 MM
- PISTON DIAMETER METRIC:
- 54.45 MM
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH METRIC:
- 54.00 MM
$169.95Qty in Cart: 0Quantity:Price:$169.95Subtotal: -
Wiseco Yamaha YFM125R Raptor 2011-2013 13:1 Piston Kit 40071M05400
WISECO
$199.95If you're running a Yamaha YFM125R Raptor and want measurable power gains without compromising reliability, a high-compression piston upgrade is one of the most direct bolt-on improvements available...09104158- SKU:
- 09104158
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE - OVERSIZE:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- PISTON DIAMETER METRIC:
- 53.95 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.0:1
- DISPLACEMENT:
- 124 CC
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- BORE SIZE METRIC:
- 54.00 MM
- MODEL:
- FORGED SERIES
- STROKE LENGTH METRIC:
- 54.00 MM
$199.95 -
Wiseco Piston Honda CRF450R 2002-2008 Standard 4440M07400
WISECO
$194.95The Wiseco Piston for Honda CRF450R (2002-2008) is engineered to restore or upgrade your engine's compression and efficiency with a precision-fit replacement that handles both trail riding and...4440M07400- SKU:
- 4440M07400
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- BORE - OVERSIZE:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 73.95 MM
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 246 CC
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH METRIC:
- 57.30 MM
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 74.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
$194.95Qty in Cart: 0Quantity:Price:$194.95Subtotal: -
Wiseco Piston Kit for 1987-1992 Honda TRX250X 75mm 12:1 Compression 4440M07500
WISECO
$194.95If you're rebuilding your TRX250X engine, you need a piston that can handle both aggressive trail riding and race-track demands without sacrificing reliability. The Wiseco 4440M07500 delivers the...4440M07500- SKU:
- 4440M07500
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PISTON DIAMETER METRIC:
- 74.95 MM
- BORE - OVERSIZE:
- +1,00 MM
- BORE SIZE METRIC:
- 75.00 MM
- DISPLACEMENT:
- 246 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH METRIC:
- 57.30 MM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +1.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- SKIRT COATING:
- NON-COATED
$194.95Qty in Cart: 0Quantity:Price:$194.95Subtotal: -
WSM Piston Kit - Honda 250 - Standard 50-229K
WSM
$103.55If you're rebuilding a Honda 250 engine, piston quality directly impacts reliability, power delivery, and longevity. The WSM Piston Kit meets or exceeds OEM specifications while adding purposeful...09103488- SKU:
- 09103488
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- STANDARD
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE SIZE METRIC:
- 68.50 MM
- BORE - OVERSIZE:
- STANDARD
- MODEL:
- ORIGINAL
- PISTON MATERIAL:
- ALUMINUM
$103.55Qty in Cart: 0Quantity:Price:$103.55Subtotal: -
WSM Piston Kit - Honda 400 - +.50 mm 50-230-05K
WSM
$134.64If you're pushing your Honda 400 to its limits, factory pistons become the weak link in your engine's reliability and output. The WSM Piston Kit delivers OEM-matching quality with engineering...09103495- SKU:
- 09103495
- Availability:
- Ships Same Business Day
- Weight:
- 0.96 LBS
- BORE - OVERSIZE:
- +0,50 MM
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- BORE SIZE METRIC:
- 85.50 MM
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
$134.64Qty in Cart: 0Quantity:Price:$134.64Subtotal: -
WSM Piston Kit - Honda 400 - +.75 mm 50-230-06K
WSM
$134.64When you're pushing a Honda 400 to its limits, stock pistons become your bottleneck. The WSM Piston Kit delivers OEM-equivalent or superior quality with purpose-built engineering—MOS2-coated skirts...09103496- SKU:
- 09103496
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- MODEL:
- ORIGINAL
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.75 MM
- BORE SIZE METRIC:
- 85.75 MM
- BORE - OVERSIZE:
- +0,75 MM
- PRODUCT NAME:
- PISTON KIT
$134.64Qty in Cart: 0Quantity:Price:$134.64Subtotal: -
WSM Piston Kit - Honda 400 - +1 mm 50-230-07K
WSM
$134.64When you're pushing your Honda 400 to the limit, stock pistons won't cut it. The WSM Piston Kit delivers OEM-or-better construction with a proprietary MOS2 coating on the skirts that actively...09103497- SKU:
- 09103497
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 86.00 MM
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
- BORE - OVERSIZE:
- +1,00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- PRODUCT NAME:
- PISTON KIT
$134.64Qty in Cart: 0Quantity:Price:$134.64Subtotal: -
WSM Piston Kit - Kawasaki 220 - +.25 mm 50-250-04K
WSM
$98.62Stock pistons can't withstand the demands of high-performance riding or racing applications—heat buildup, detonation, and premature wear will compromise your engine's reliability and power output...09103499- SKU:
- 09103499
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- PISTON MATERIAL:
- ALUMINUM
- BORE SIZE METRIC:
- 67.25 MM
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- BORE - OVERSIZE:
- +0,25 MM
- BORE - OVERSIZE METRIC:
- +0.25 MM
- PRODUCT NAME:
- PISTON KIT
$98.62Qty in Cart: 0Quantity:Price:$98.62Subtotal: -
WSM Piston Kit - Yamaha 80 - Standard 50-536K
WSM
$58.80If you're running a Yamaha 80 and want reliable performance without compromise, the WSM Piston Kit delivers OEM-quality construction with measurable upgrades in heat management and durability. The...09103534- SKU:
- 09103534
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- PISTON KIT
- BORE SIZE METRIC:
- 47.00 MM
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
$58.80 -
WSM Piston Kit - Yamaha 80 - +.50 mm 50-536-05K
WSM
$58.80Stock pistons compromise performance and longevity under aggressive riding conditions. The WSM Piston Kit delivers OEM-quality construction with advanced heat management and durability upgrades that...09103536- SKU:
- 09103536
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- BORE - OVERSIZE:
- +0,50 MM
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PRODUCT NAME:
- PISTON KIT
- BORE SIZE METRIC:
- 47.50 MM
- PISTON MATERIAL:
- ALUMINUM
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
$58.80Qty in Cart: 0Quantity:Price:$58.80Subtotal: -
WSM Piston Kit - Yamaha 80 - +.75 mm 50-536-06K
WSM
$54.90If you're pushing your Yamaha 80 to the limit, OEM pistons won't cut it—especially at higher displacement. The WSM Piston Kit delivers the durability and thermal management you need to maintain peak...09103537- SKU:
- 09103537
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- BORE - OVERSIZE:
- +0,75 MM
- BORE SIZE METRIC:
- 47.75 MM
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE METRIC:
- +0.75 MM
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
$54.90Qty in Cart: 0Quantity:Price:$54.90Subtotal: -
WSM Piston Kit - Kawasaki 650 - Standard 50-256K
WSM
$113.84Stock pistons wear down, lose compression, and rob your Kawasaki 650 of horsepower and reliability. The WSM Piston Kit delivers OEM-quality construction with measurable performance upgrades—lower...09103539- SKU:
- 09103539
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- ORIGINAL
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 80.00 MM
$113.84 -
WSM Piston Kit - Kawasaki 650 - +.25 mm 50-256-04K
WSM
$113.84When you're pushing a Kawasaki 650 to its limits, stock pistons become the weak link in your engine's durability chain. The WSM Piston Kit delivers OEM-matching quality with measurable performance...09103540- SKU:
- 09103540
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MODEL:
- ORIGINAL
- RIDING STYLE:
- ATV
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE:
- +0,25 MM
- BORE - OVERSIZE METRIC:
- +0.25 MM
- BORE SIZE METRIC:
- 80.25 MM
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
$113.84Qty in Cart: 0Quantity:Price:$113.84Subtotal:
